METHOD FOR REPAIRING GUIDE RAILS OF AN ASSEMBLY RADIALLY MAINTAINING A SUPPORT PLATE OF A PRESSURIZED WATER NUCLEAR REACTOR CORE

METHOD FOR REPAIRING GUIDE RAILS OF AN ASSEMBLY RADIALLY MAINTAINING A SUPPORT PLATE OF A PRESSURIZED WATER NUCLEAR REACTOR CORE

The repair procedure consists of cutting away at least one of the two side branches (27b) of the slideway guide (27) for a radial slider key (15) on a PWR support plate (5) after measuring the distance between the faces of the two branches. The cutting operation is performed by electro-erosion acros...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: GUIRONNET, STEPHANE, GRYPCZYNSKI, DANIEL, FABRIS, MIRCO
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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Beschreibung
Zusammenfassung:The repair procedure consists of cutting away at least one of the two side branches (27b) of the slideway guide (27) for a radial slider key (15) on a PWR support plate (5) after measuring the distance between the faces of the two branches. The cutting operation is performed by electro-erosion across the corner of the U-shaped guide, and a replacement side branch is machined to the required dimensions and fixed in place by screws inserted through holes drilled from the outside of the guide holder (26).